Quiz 4 Study Guide Flashcards

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1
Q

the force of gravity on an object

A

weight

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2
Q

the skeleton of a building, gives it its shape

A

frame

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3
Q

the attracting force between two objects

A

gravity

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4
Q

a machine that makes lifting heavy things easier

A

pulley

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5
Q

a device that generates electromagnetic force

A

electromagnet

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6
Q

a substance that minimizes friction

A

lubricant

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7
Q

the part of a lever which holds and balances weight

A

fulcrum

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8
Q

the base of a building

A

foundation

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9
Q

Does a smooth surface increase friction or decrease friction?

A

decrease

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10
Q

A screw is an example of which type of machine?

A

inclined plane

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11
Q

Which has more gravity: the moon or the earth?

A

earth

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12
Q

Does an upright pyramid have a high center of gravity or low center of gravity?

A

low

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13
Q

A car uses a wheel and axle to overcome what force?

A

friction

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14
Q

Having two opposite sides that work differently

A

polarity

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15
Q

Grease is a good example of a ________________.

A

lubricant

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16
Q

The earth acts like a giant ___________________.

A

electromagnet

17
Q

Is a magnet’s force stronger or weaker at its poles?

A

stronger